Physical Sciences and Mathematics | Open Access Articles

Temporal Foraging Patterns Of Nonnative Frogs (Eleutherodactylus Coqui) In Hawaii, Arthur C. Wallis, Robyn L. Smith, Karen H. Beard

Wildland Resources Faculty Publications

The Puerto Rican Coqui Frog (Eleutherodactylus coqui) is a nocturnal, invasive species that was introduced into Hawaii in the 1980s. Because they reach extremely high densities (up to 90,000 frogs/ha), they have the potential to affect invertebrate prey communities. Previously, researchers used frogs collected only at night to characterize their prey. Because Coquis use retreat sites near the forest floor during the day and understory perch sites at night, frogs collected at night might show different amounts and types of prey than would frogs collected in the morning. We analyzed stomach contents of 435 frogs collected in the morning (0300–0600 …

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Geolocator Tracking Of Great Reed-Warblers (Acrocephalus Arundinaceus) Identifies Key Regions For Migratory Wetland Specialists In The Middle East And Sub-Saharan East Africa, Joshua J. Horns, Evam Buechley, Mark William Chynoweth, Lale Aktay, Emrah Çoban, Mehmet Sli Kırpık, Jordan M. Herman, Yakup Şaşmaz, Çağan H. Şekercioğlu

Wildland Resources Faculty Publications

Wetland-dependent migratory songbirds represent one of the most vulnerable groups of birds on the planet, with >67% of wetland-obligate species threatened with extinction. One of the major hurdles for conservation efforts is determining the migration routes, stopover sites, and wintering sites of these species. We describe an annual migration cycle revealed by geolocator tracking of Great Reed-Warblers (Acrocephalus arundinaceus) breeding in the Aras River wetlands of eastern Turkey. Because of its relatively large size and breeding ground fidelity, the Great ReedWarbler is an excellent candidate for geolocator studies and can serve as an indicator species for other wetland songbirds, many …

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The Persistence And Characteristics Of Chinook Salmon Migrations To The Upper Klamath River Prior To Exclusion By Dams, John B. Hamilton, Dennis W. Rondorf, William R. Tinniswood, Ryan J. Leary, Tim Mayer, Charleen Gavette, Lynne A. Casal

Wildland Resources Faculty Publications

In this research article, John Hamilton and his co-authors present extensive new research and information gathered since a 2005 publication on the historical evidence of anadromomous fish distribution in the Upper Klamath River watershed. Using historical accounts from early explorers and ethnographers to early-twentieth-century photographs, newspaper accounts, and government reports, the authors provide a more complete record of past salmon migrations. The updated record “substantiate[s] the historical persistence of salmon, their migration characteristics, and the broad population baseline that will be key to future commercial, recreational, and Tribal fisheries in the Klamath River and beyond.” During a time when salmon …

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Full-Text Articles in Physical Sciences and Mathematics

Temporal Foraging Patterns Of Nonnative Frogs (Eleutherodactylus Coqui) In Hawaii, Arthur C. Wallis, Robyn L. Smith, Karen H. Beard

Wildland Resources Faculty Publications

Wildland Resources Faculty Publications

The Persistence And Characteristics Of Chinook Salmon Migrations To The Upper Klamath River Prior To Exclusion By Dams, John B. Hamilton, Dennis W. Rondorf, William R. Tinniswood, Ryan J. Leary, Tim Mayer, Charleen Gavette, Lynne A. Casal

Wildland Resources Faculty Publications